removed includes of unused libraries and code correction

mainwindow.cpp

@@ -822,7 +822,6 @@ bool MainWindow::getUserPassword(Connexion * object)
 //Slot activated when a file is clicked in the treeview
 void MainWindow::on_treeWidget_itemClicked(QTreeWidgetItem *item, bool downloadDir)
 {
-    QFuture<void> future;
     QFileDialog dialog;
     QTreeWidgetItem * itemR;
     QString path;

password.cpp

@@ -44,7 +44,7 @@ QString getPassword(const QString& name)
 
     if(readPass.error())
     {
-        qDebug()<<"KeyHandler~Error reading decrypt Pass. Error: " + readPass.errorString();
+        cout << "KeyHandler~Error reading decrypt Pass. Error: " + readPass.errorString() . toStdString() << endl;
         return "";
     }
     else